Heater Controls Illumination Problem

[BitBasher 10]

Recently I've noticed that the dash lights for the heater controls on my '01 Forester do not immediately light up when the headlights are turned on. This seems to be related to cold temperatures, as they will gradually come on as the interior of the car warms up... like in 20 minutes or so.

Seems like it's related to solid state control...

Has anybody else experienced this?

Cheers

[Legacy777 135]

What sort of temperatures are you dealing with when you say "cold"?